Service description: virtualized system Services: define the specifications of the provided virtual machines from the virtualization resource configuration requirements, Determine the high availability, effectiveness, and availability of a virtualized environment that provides services from the perspective of business service requirements. Performance and Business continuity Technology capabilities Virtualization Operation maintenance: identify Technical capabilities Virtualization Security from the Perspective of operational Monitoring and IT Operations and maintenance processes to ensure the delivery and support of effective Virtualization Resources Services: determine the security technical capability requirements to ensure the virtualization resources provided from the perspective of information security.